I've done some work in the past with hooking up Hall Effect sensors, e.g. OH090U up to an Arduino. Please note, I do have limited electronics knowledge.
What I would like to know is if it is possible to wire up multiple OH090U components to increase the coverage of detecting a magnetic field over a larger area. Is there a way to tie the digital output across multiple sensors, so that if one or many sensors trigger it just sends one digital output?